文房四侯

Explanation: Refers to the pen, ink, paper and ink. The ancients dubbed pen to control the city Maoyuan Rui Hou, Yan Hou Jimo stone for the imaginary, the paper is better known white mulberry Zhi Hou, Hou Yi Xuan Songzi ink for light, it said. 　　Source: See Jane Yi Su Song, "Man Room four spectrum" citations Song "Four Hou pass."